...inued the march throughout the night, via Liberty, New Market, and Monrovia, on the Baltimore and Ohio Railroad, where we cut the telegraph wires and obstructed the railroad. We reached at daylight Hyattstown , on McClellan's line of communication with Washington, but we found only a few waggons to capture, and pushed on to Barnesville, which we found just vacated by a company of the enemy's cavalry. We ...